Scoring-machine



C. B. PEARSALL.

SCORING MACHINE.

APPLICATION FILED 00128, 19H.

1,373,668. Patented Apr. 5, 1921..

2 SHEETSSHEET I.

WITNESS:

ATTORNEY.

UNITED STATES OFFICE.

CHESTER B. PEARSALL, OF ROCHESTER, NEW YORK, ASSIGNOR TO M. D. KNOWLTON COMPANY, OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

SCORING-MACHINE.

T 0 aZZ whom it may concern Be it known that I, CHESTER B. PEARSALL, a citizen of the United States, and resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Scoring- Machines, of which the following is a speci fication.

This invention relates to machines for scoring paper board and particularly to that class known as double-scoring machines, where the paper board is fed through a primary scoring mechanism, and is subsequently fed through a secondary scoring mechanism, the path and travel to and through the secondary scoring mechanism being at right angles or substantially at right angles to the path of travel through the primary scoring mechanism. In this class of machines, the sheet of paper board is fed through the primary scoring mechanism, and after being operated upon, passes on to a receiving or feed table. During the passage of the sheet through the primary scoring mechanism, it is in some instances slit longitudinally so that it emerges on to the feed table as two sheets. The two sheets are then fed transversely of the feed table to the secondary scoring mechanism where they are again operated upon. This feeding of the two sheets transversely of the feed table, or in a path at right angles to their path of travel through the primary scoring mechanism, has been accomplished by means of a reciprocating feed device which engages the edge of the rear sheet which is that one remote from the secondary scoring mechanism, and because of the abutting of the adjacent edges of the sheets, feeds both of the sheets to said secondarv scoring mechanism. It has been found in practice, however, particularly in the case of thin paper stock, that the engagement between the adj acent edges of the two sheets is not always properly or uniformly maintained during the feeding operation, in which event the forward sheet is liable to veer from its proper or predetermined path and either clog the machine or else be improperly scored. Either of these events obviously results in loss of time and waste of material.

The present inventionhas for its primary object a method of and means for double scoring the sheets of paper board so that the Specification of Letters Patent.

Patented Apr. 5, 1921.

Application filed October 28, 1919. Serial No. 333,883.

proper scoring of the sheets will be absolutely insured.

Thls accurate double scoring of the sheets is accompllshed by passing the original sheet of paper board through the primary scoring mechanism, where the paper board is scored 1n one direction. During the passage qi'the orlginal sheet of paper board throug the primary scoring mechanism, the board 1s provided with an interrupted slit, or otherwise stated, the board is partially slit so that unslitted portions intervene between the slitted portions. Thus, the original sheet isin effect divided into two sheets by the primary scoring mechanism, and is fed upon the feed table in this condition. However, the two sheets are attached together along an intermediate longitudinal line by the unslitted portions. Consequently, when the transverse feed device opcrates upon the work to feed it to the secondary scoring mechanism, there is a positive attachment between the two sheets. Nat urally, this will result in the feeding of both of the sheets to the secondary scoring mech anism accurately and in the same path. After the sheets have passed through the secondary scoring mechanism, they may be broken apart by disrupting the unslitted portions in any suitable manner.

Referring to the drawings:

Figure 1 is a plan view of the device.

Fig. 2 is a vertical sectional view, the secondary scoring mechanism being shown in elevation, and the primary scoring mechanism being shown in section.

Fig. 3 is anelevation of one of the slitting blades; V

4 Fig. 4 is a sectional view thereof; and

Fig. 5 is a view of the work showing the manner in which it is slitted in its passage through the primary scoring mechanism.

The machine illustrated includes a frame 10, which supports at one end a pair of These mandrels are actuated through gears 15, which in turn are actuated through a pinionldcarried by a shaft 17 This shaft 17 isdriven by a second shaft 18 and is geared thereto by beveled gears 12?, the shaft 18 being actuated in any suitable manner. A. feed table 20 is supported by the frame 10, and is adapted to receive the work after it has been operated upon by the creasers and slitting blades 12 and 14, respectively.

One of the members of the intermediate pair of slitting blades 14: is provided in its cutting edge with a notch or depression 21, and this notched blade may either be the upper or lower one of the pair. As the paper board passes through the primary scoring mechanism, that is to say, between the creasers 12 and the slitting blades 14, the sheet will be scored as at 22, the outer edges of the sheet cut or trimmed by the outermostpairs of slitting blades in the usual manner. However, the intermediate pair of slitting blades will act to only partially slit the sheet, that is to say, they will produce therein a non-continuous slit, inasmuch as the slit will be interrupted by unslitted portions. The sheet will have the appearance illustrated in Figs. 1 and 5, where portions, such as 23, will be slit, and unslitted portions, such as 24, will intervene between the slits, so that while the intermediate blades will divide the original sheet into two sheets, these two sheets will be attached together by the unslitted portions 2 1.

When double faced corrugated board is operated upon and when the uppermost slit ting blade is provided with the depression 21, the lower facing will be entirely slitted from end to end, while the upper facing will be provided with the interrupted slit. Of course, the converse is also true, where the positions of the blades are reversed. Then again, if, instead of using one unbroken blade, both of the blades are provided with depressions, such as 21, the lower facing as well as the upper facing will be provided with an interrupted slit, which, in other words, will only be partially slit. In any event, the two sheets which issue from the primary scoring mechanism to the feed table, will be attached together at intervals by unslitted portions, which, however, may be easily ruptured when it is desired tov break the sheets apart.

Disposed at right angles to the primary scoring mechanism, is the secondary scoring mechanism, which includes the creasing blades 25, mounted on mandrels 26, and slitting blades 27, which are rnounted on mandrels 28, the mandrels 26 and 28 being driven by gears 29, which are geared to the shaft 18.

A reciprocatory feed device 30, which may be of the form illustrated in the patent to Seymour, No. 1,098,689, dated June 2, 1914:, and which may be actuated as illustrated in said patent. but which may be of any other desired form and may be actuated in any suitable manner, is mounted to reciprocate transversely of the'table 20, and to engage the edge of the sheet remote from the secondary scoring mechanism, so that in its movement transversely of the feed table, it will, because of the attachment between the two scored sheets, feed both of the sheets to said mechanism.

It will thus be seen that as the sheet of paper board is fed through the primary scoring mechanism, it will be provided with the usual scoring and along its longitudinal center it willbe provided with the interrupted slit, so that the resulting two sheets will be attached together by portions of the sheets themselves. These sheets will then be fed transversely of the feed table by pressure on the edge of the" sheet remote to the secondary scoring mechanism. After they have been operated upon by the sec ondary scoring mechanism, they maybe disrupted along the intermediate interrupted slit, so that they will finally resolve themselves into two independent sheets. In-

asmuch as the two sheets will be positively attached together during the transverse feeding to the secondary scoring mechanism, the sheets will approach and pass through the secondary scoring mechanism in the same path, so that they will be slitted by the blades 27 and creased by the creasers 25 accurately with respect to the creasing and slitting which is accomplished by the primary scoring mechanism. 7

What I claim is:

1. The method of treating paper board, which consists in passing the board through a primary scoring device, partially slitting the board longitudinally, and feeding the slitted board transversely to a secondary scoring device by pressure on the edge of the board remote from the secondary scoring device.

2. The method of treating paper board, which consists in passing the board through a primary scoring device, partially slitting the board longitudinally, feeding the slitted board transversely to a secondary scoring device by pressure on the edge of the board remote from said secondary scoring device, and disrupting the board along the longitudinal slit. 7

3. The method of treating paper board, which consists in passing the same through a primary scoring device, partially slitting the board longitudinally whereby two sheets attached togethed by unslitted portions are formed, and feeding said two sheets transversely to a secondary scoring device by pressure on the free edge ofthe sheet'remote from said secondary scoring device.

&. In a machine of the class described,

secondary scoring device arranged at right angles to the primary scoring device, means for partially slitting the paper board in its passage through the primary scoring device whereby two sheets attached together by unslitted portions are formed, means operating on the edge of the sheet remote to the secondary scoring device to feed both of the sheets to said device, the sheet adj acent to the said secondary scoring device being fed by pressure transmitted through the unslitted portions, and the remote sheet by pressure applied directly thereto.

5. In a machine of the class described, including a primary scoring device and a secondary scoring device, means for partially slitting the board longitudinally to produce two sheets attached together by unslitted portions whereby the two sheets may be fed to the secondary scoring device by pressure applied to the edge of the remote sheet, and means for feeding the sheets to the secondary scoring device by pressure on the edge of said remote sheet.

6. In a machine for operating on a sheet of material including a feed table and devices for treating the sheet located on adjacent sides of the table, means for feeding the sheet longitudinally of the feed table, means for partially slitting the sheet on a line parallel to its path of movement whereby two sheets attached together by spaced unslitted portions are produced, and means for feeding" the sheets transversely of the table by pressure on the longitudinal edge ofone of the sheets.

Signed at Rochester in the county of Monroe and State of New York this 24th day of October, A. D. 1919.

CHESTEK B. PEARSALL. 

